Apparatus for regulating the supply of explosive mixture to gas engines



T. GENDARME.

APPARATUS FOR R EGULATING THE SUPPLY OF EXPLOSIVE MIXT URE T0 GAS ENGINES.

Patehted Aug 22, 1922.

APPLICATION FILED OCT. 27.1919.

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Mi cw r-v Magnet uh as 3. 12: (thu O TQUSSAINT GEIIDARIVEE, 0F SERAING, BELGIUM, ASSIGNOR TO SOCIETE ANONYME JOHN COCKERILL, OF SERAING, BELGIUM.

APPARATUS FOR.- REGULATING [PI-TE SUPPLY 013 EXPLOSIVE MIXTURE TO GAS ENGINES.

Application filed. October 27, 1919.

T 0 all whom it may con-0cm Be it known that T, TOUSSATNT GEN- DARME, a subject of the King of Belgium, residing at Seraing, in the Kingdom of Belgium, have inven ed certain new and useful Improvements in Apparatus for Regulating the Supply of Explosive llllixture to Gas Engines, of whichthe following a specification.

This invention relates to apparatus for regulating the supply of explosive mixture to gas engines, and which will serve for effecting a distribution with constant compression and with an admission of the mixture variable with the load of the engines.

The apparatus consists mainly in the combination with an admission valve for the mixture, of a cylindrical slide valve, actuated by the i aid admission valve, of a second cylindrical slide valve moving within the first under the action of the engine governor for regulating, as required, either the admission alone of the gas, or simultaneously the admission of the gas and the admission of the air through suitable ports provided in the first cylindrical slide valve.

To enable the invention to be fully under stood, an example of the application is here inafter described, for obtaining a constant compression.

The accompanying drawing is a vertical section through the distributing mechanism.

In the drawing a indicates the admission casing of the mixture with its two inlets for gas and air Z) c.

The gas inlet 7) communicates by means of ports (Z with a cylindrical chamber (2 forming the admission chamber of the mixture. The air inlet a communicates with the said chamber by means of ports f.

This. chamber is closed at its lower end which opens into the engine cylinder through an inlet valve 9 for the mixture mounted upon a. rod h which traverses, by a passage 2', the 10' *cr wall of a casing placed above the inlet casing of the mixture and which contains the retracting spring 70 of the inlet valve g.

This spring acts upon the operating rod h of the valve through the medium of a cap Z guided in the casing j. The rod it of the valve is actuated above the cap Z by a lever m, rocking upon a pivot n and receiving motion from suitable levers subjected to the action of the distributing cams of the engine, and not shown in the drawing.

Specification of Letters Patent.

Patented Au 22, 1922.

Serial No. 333,695.

According to the invention the inlet valve 9 for the mixture is, by means of ribs 0, made integral with a cylindrical slide valve 79 movmg in the chamber 0 and provided with ports 9.

ln the said cylindrical slide valve moves a second cylindrical slide valve 1' carried'by rods 8,"subjected to the action of levers I mounted upon a shaft 14, placed in the casing j. This shaft 10 extends outside the casing j, and is connected at o to a suitable drive placed under the control of the engine governor. 7

By reference to the drawing which shows the arrangement adopted for obtaining a distribution with constant compression and with admission of the mixture variable with the load of the engine, it will be understood that the valve 9 when it is moved from its seat under the action of the distribution control operating upon the rod in through the rocking lever m draws along with it the slide valve 79.

This slide valve, as it moves, uncovers the ports 7 through which the air enters; at the same time the ports 9 of the cylindrical slide valve come opposite the ports (Z and therefore allow the gas to pass.

The air and gas ports being uncovered simultaneously the engines cylinder becomes filled with the mixture. The admission of the gas is at the maximum and, in this case, the engine works with full load. On the other hand, the cylinder becomes filled with mixture and the compression is at the maximum.

The combination of the ports is suitably chosen according to the nature of the gas employed. The uncovered passages are always proportionate, so that an exact quantity of mixture is suppled resulting in perfect ignition.

The working of the engine with full load and with complete admission of the mixture is thus efi'ected. lVith a light load, the mixture inlet valve in opening uncovers the ports 7 which allow the air to enter; the governor in assuming its position of equilibrium acts, through the drive 4), shaft u, levers t and rods 8, upon the cylindrical slide valve 7" and moves it in the direction of the arrow, that is to say, in the same direction as the lift of the mixture inlet valve.

The slide valve, in moving, closes the ports 9 of the cylindrical slide valve p during a certain portion of the stroke and the the whole of the stroke and the gas admission during a part of the stroke so that the volume of gas varies with the loads ofthe engine. The distribution therefore allows of admitting into the cylinder, when the load is reduced, at first a certain volume of air,

then a volume of mixture of air and gas and finally a volume of air.

In this case, also the cylinder consequently becomes completely filled and the compression is constant and maximum.

The properly determined. positioning of the sparking plugs insures a perfect ignition of the mixture, even though with small charges.

The passage left free by the cylindrical slide valve 00 being properly proportioned, the mixture, admitted is always homogeneous and the ignitions consequently, are perfectly effected and insure an effective explosion with the most reduced charges.

What I, claim is:

1. The combination of a valve casing having therein a cylindrical admission chamber, with gas and air admission ports spaced end- Wise thereof, a valve controlling the passage of the mixture from the chamber to the cylinder, a pair of concentric cylindrical slide valves slidable withinthe chamber, one of 1 name-54.

the slide valves having ports cooperative with the ports of the chamber to vary the admission of gas and air in a definite ratio and rigidly connected to the first mentioned valve for operation therewith, the other cycrating between the admission chamber of a the casing and the cylinder of the engine, a cylindrical slide valve rigidly connected to the valve and movable in said, chamber to cover and uncover the ports-in a definite ratio, said cylindrical valve having ports s )aced a distance apart equal tothose of the chamber, a second cylindrical slide valve disposed within the first slide valve andoperable by the governor of the engine tovary the ettective gas admission openings between the first cylindrical-valve and the chamber to extents proportional to the speed of theengine independently of the variation of the air admission control. p

In testimony whereof I have afiixedmy signature in presence of two witnesses.

TOUSSAINT GENDARME.

\Vitnesses:

I-l. SAVAGE,

FRANK A. PHELAN. 

